Hydraulics & Fluid Mechanics
According to Bernoulli’s equation for steady ideal fluid flow

total energy is constant throughout
the energy is constant along a stream-line but may vary across streamlines
principle of conservation of mass holds
velocity and pressure are inversely proportional

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Hydraulics & Fluid Mechanics
The horizontal component of force on a curved surface is equal to the

force on the horizontal projection of the curved surface
product of pressure intensity at its centroid and area
weight of liquid vertically above the curved surface
force on a vertical projection of the curved surface

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Hydraulics & Fluid Mechanics
True one-dimensional flow occurs when

the direction and magnitude of the veiocity at all points are identical
the magnitude and direction of the velocity do not change from point to point in the fluid
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

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